{"product_id":"spi-29-507-1-class-zz-plus-plug-gage-0-507-in","title":"Spi 29-507-1 Class Zz Plus Plug Gage 0.507 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-507-1 is a Class ZZ Plus plug gage designed for precise go\/no-go inspection of bored holes and machined features at a nominal diameter of 0.507 inches. Built from steel, this gage holds a tolerance of 0.0002 inches, making it suitable for medium-precision inspection tasks in production and quality-control environments. Machinists, toolmakers, and quality technicians use plug gages of this class to verify that drilled, reamed, or bored holes fall within specified dimensional limits before parts advance to the next stage of manufacturing.\u003c\/p\u003e\n\u003cp\u003eClass ZZ Plus plug gages are commonly applied in job-shop and production-floor inspection routines where consistent, repeatable measurements are required. This gage is appropriate for checking hole diameters in metal, plastic, or composite workpieces wherever a 0.507-inch nominal bore tolerance must be confirmed. It suits both incoming inspection of purchased parts and in-process verification during machining operations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal measurement diameter of 0.507 inches for targeted hole inspection\u003c\/li\u003e\n  \u003cli\u003eClass ZZ Plus tolerance of 0.0002 inches for reliable go\/no-go verification\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and dimensional stability under shop conditions\u003c\/li\u003e\n  \u003cli\u003eCompact and lightweight at 0.2 pounds for easy single-hand use at the machine or inspection bench\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard inspection tool for use wherever a 0.507-inch Class ZZ Plus plug gage is specified in a dimensional inspection procedure.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages require no power and no special tools to use, but proper handling is critical to maintaining accuracy. Always clean and deburr the hole being checked before inserting the gage, and use only light, consistent hand pressure to avoid false readings or gage wear. Store the gage in its protective case when not in use to prevent nicks or corrosion that could compromise the tolerance surface. Periodic calibration against a traceable standard is recommended to confirm continued accuracy over time.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Diameter\u003c\/strong\u003e: 0.507 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGage Class\u003c\/strong\u003e: ZZ Plus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 29-507-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51689160474930,"sku":"29-507-1","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1dcbeb3449dc053619e6dadedda887c4.jpg?v=1788255366","url":"https:\/\/voomisupply.com\/products\/spi-29-507-1-class-zz-plus-plug-gage-0-507-in","provider":"Voomi Supply","version":"1.0","type":"link"}